I have been trimming my hair for a few years now (Wahl clippers - 0 to 1/2 on the sides tapered into a 1 1/2 guard on the top) and it seems that in the past few months, I noticed cut lines on the sides and back of my head. I never noticed them before and it seems that the only way I can semi-remove them is to take the hair on the sides of my head down to nothing. What's crazy is that I can use the same gauge guard (or even no guard - straight clippers), cut the sides and back of my head, and the lines still show up. I know some men like taking it all off, but I don't. I prefer the fuzz all over and using the 1/2 guard on the sides. But I don't want to have these ridiculous cut lines all the time. I also realize that a skull/scalp is not symmetrical and that may be partially to blame, but I don't recall having them when I first started buzzing my head.
Any ideas what could be going on and any possible suggestions for getting rid of these (besides taking it all off)? I have been beginning to wonder if my clippers could be the problem but I'm not sure. Thanks!